51 citations
,
January 2004 in “Domestic animal endocrinology” Melatonin implants and long daylight hours alter the timing of hormone release and hair growth in mouflon sheep.
39 citations
,
November 2016 in “Pharmaceutics” The hair follicle pathway significantly affects how easily water-loving chemicals pass through the skin.
7 citations
,
January 2010 in “Animal” Angora goat hair grows faster and produces more protein than cashmere goat hair, and certain hormones and nutrients positively affect hair growth and protein synthesis.
May 2021 in “Journal of the Endocrine Society” A patient produced cortisol after adrenalectomy, possibly due to residual tissue or other body parts making steroids.
7 citations
,
June 2021 in “Amino acids” Human hair protein modifications could potentially indicate heart disease risk.
25 citations
,
May 2021 in “Journal of exposure science & environmental epidemiology/Journal of exposure science and environmental epidemiology” Common Black hair care products may affect hormone levels and potentially impact health, especially in reproductive and metabolic areas.
August 2025 in “Tropical Journal of Natural Product Research” Celery extract and candlenut oil effectively and safely boost hair growth.
19 citations
,
August 2010 in “Journal der Deutschen Dermatologischen Gesellschaft” Certain plant extracts can effectively treat skin conditions like athlete's foot, chronic vein problems, sun damage, skin growths, vitiligo, and hair loss, and may also improve skin appearance.
11 citations
,
October 2020 in “General and comparative endocrinology” Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.
40 citations
,
October 2004 in “Veterinary Dermatology” Trilostane treatment led to full hair regrowth in most Pomeranians and all miniature poodles with alopecia X.
3 citations
,
May 2022 in “Clinical endocrinology” Hair steroid measurement is an effective method to diagnose and monitor CAH in developing countries.
October 2024 in “World Journal of Psychiatry” Stress worsens hair loss in androgenetic alopecia.
16 citations
,
September 2009 in “Schweizer Archiv für Tierheilkunde” Adrenal tumors can cause high progesterone levels, mimicking symptoms of high cortisol.
7 citations
,
May 2021 in “Dermatologic Clinics” Nutraceuticals like Ashwagandha and Astaxanthin may help with hair loss, but supplement regulation is challenging.
2 citations
,
May 2022 in “Diagnostics” Vitamin D levels in hair don't match those in blood, so hair isn't a reliable indicator of Vitamin D status.
42 citations
,
December 2019 in “Steroids” Body hair isn't a good substitute for scalp hair in steroid analysis.
2 citations
,
December 2021 in “BMC veterinary research” Long-term use of difluprednate eye drops in dogs can lead to hair loss and hormone imbalance.
2 citations
,
February 2024 in “Toxins” Bee venom can help stem cells promote hair growth.
2 citations
,
May 2021 in “Scientific Reports” Stress is likely causing hair loss in Formosan macaques.
October 2023 in “Scientific Reports” Oxytocin may help hair grow by increasing hair growth-related genes and factors.
30 citations
,
April 1997 in “European journal of endocrinology” The document concludes that managing hirsutism involves identifying the cause, using a scoring system for severity, combining cosmetic and medical treatments, encouraging weight loss, and providing psychological support, while noting the need for more research on drug treatments.
102 citations
,
July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
2 citations
,
December 2022 in “Metabolites” Hair analysis shows low progesterone in anorexia patients, unchanged by short-term weight gain.
74 citations
,
March 2006 in “Journal of Chromatography B” Hair analysis is promising for detecting drug misuse in livestock.
November 2025 in “Psychoneuroendocrinology” Hair proteomics could be a useful, non-invasive tool for identifying stress-related disorders.
1 citations
,
October 2020 in “PubMed” Hormone testing may not be very helpful in diagnosing female pattern hair loss.
February 2024 in “Scientific Reports” Cinnamic acid may help hair grow by activating oxytocin receptors.
12 citations
,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
1 citations
,
July 2022 in “Case reports in endocrinology” A 70-year-old woman with a malignant adrenal tumor improved after surgery and radiotherapy.
September 2025 in “Cosmetics” NMN supplements may improve hair quality and appearance in middle-aged women.